How to Update Nexus S to Android 2.3.4 Manually
Lets start with updating:
First of All download the update to your Computer:
Download Android 2.3.4 Gingerbread (GRJ22-from-GRI40)
Step 4: Turn on the phone and start the recovery mode, press the “Volume + “and “Power”button at the same time.
Step 5: Select the recovery mode the volume keys “to apply the update / SDCard” from the list and press the power button.
Step 6: Android for the 2.3.4 update to wait until the end
Are you ready, Android has been successfully installed 2.3.4 Nexus S.